/Engine/Plugins/Experimental/UIFramework/Source/Public/Widgets/UIFButton.h
[UCLASS](Programming/UnrealArchitecture/Reference/Classes#classdeclaration)(DisplayName="Button UIFramework") class UUIFrameworkButton : public [UUIFrameworkWidget](API\Plugins\UIFramework\UUIFrameworkWidget)
FUIFrameworkCli...
OnClick